Bobbin-clamp for shuttles.



R. N. ALLEN.

BOBB|N CLAMP FOR SHUTTLES. APPLICATION FILED 050.17.1914.

1,1$5,@5U0 Patented July 6, 1915.

COLUMBIA MOURAPN (20-. WASHINGTON. D. C.

TIT

ROBERT N. ALLEN, OF METHUEN,1VIASSACI-IUSETTS, ASSIGNOR. TO U. S.BOBIBIN & SHUTTLE COMPANY, OF PROVIDENCE, RHODE ISLAND, A CORPORATION OFNEW JERSEY.

BOBBIN-CLAMP FOR SHUTTLES.

Specification of Letters Patent.

Patented July 6, 1915.

Application filed December 17, 1914. Serial No. 877,630.

To all whom it may concern I.

Be it known that I, ROBERT N. ALLEN, a citizen of the United States,residing at Methuen, in the county of Essex and State of Massachusetts,have invented a new and useful Improvement in Bobbin-Clamps forShuttles, of which the following is a speci fication.

This invention relates to certain new and useful improvements in bobbinclamps for shuttles, and the primary object thereof is to provide anovel and improved form of clamp in which the guide member is formed tohave arms which engage and secure the spring arms which grip the bobbin.

A further object of the invention is to provide a clamp in which theguide member and spring arms are secured to one another without the useof extraneous fastening means, thus economizing in production of thestructure and in assembling of the parts.

Other and further objects of the invention will be later set forth andevidenced in the course of the following description.

In the drawings-Figi1re 1 is a top plan view of the invention, theshuttle being broken partly away and shown in section. Fig. 2 is avertical longitudinal sectional view of Fig. 1. Fig. 3 is a section onthe line 3-8 of Fig. 2. Fig. & is a plan view of the blank from whichthe guide is formed, and Fig. 5 is a similar view of one of the blanksfrom which the spring jaws are formed.

In proceeding in accordance with the present invention, a guide memberis formed from a blank of the form shown in Fig. 4: to have parallel topand bottom parts 1 and 2 and a guide proper 3 which is inclined andconnects the parts 1 and 2. The parts 1 and 2 are formed with openings4: which register in the manner illustrated in Fig. 2 of the drawings.The base or bottom part 2 is formed with a widened foreportion 5 for apurpose now to be described. The spring jaws 6 are formed of separatepieces and have shanks 7 which latter are in contacting relation and arereceived in the space be tween the top and bottom parts 1 and 2 of theguide member.- The top and bottom edges of the shanks of the jaws areformed with outwardly projecting lugs 8 which are received in theopenings 1-4 of the top and bottom parts 1 and 2, as depicted moreclearly. in Fig. 2 of the drawings.

The shanks 7 also have registering apertures 9 through which a securingbolt 10 passes for the purpose of securing the entire structure to theshuttle.

'It will be apparent from the foregoing that the guide member thus actsas a means of securing the jaws in position and to itself without theuse of extraneous fastening means, since the lugs 8 are formed integralwith the shanks of the jaws and are received in openings providedtherefor in the top and bottom parts of the guide member.

The inclined guide proper 8 also has its opposite sides engaged by thebent portions X of the spring jaws, as shown in Figs. 1 and 2 of thedrawings, thus preventing accidental or other lateral movement of thetwo parts relatively to each other, since the bent portions X of thejaws embrace the guide proper 3, and extend on opposite sides thereof.

The lugs preferably have sufficient play within the openings 4: in orderto enable leverage action of the spring arms so that same will fulcrumon the lugs. The lugs 8 by virtue of engaging in the openings 4 preventthe jaw shanks from relative spreading.

The widened base parts 5 provide seats which afford firm and efi'ectivebearings or supports for the lower edges of the shanks 7 and the curvedparts X thereof, as shown in Fig. 1.

Having thus described my invention, I claim as new and desire to secureby Letters Patent L In a bobbin clamp for shuttles, a guide memberhaving a top and a bottom part each having a single opening, which twoopenings register, and a pair of jaws having abutting shanks eachprovided with an upwardly and a downwardly extending lug, the two lugsat the bottoms of the shanks being jointly received in the singleopening of the bottom part, and the two lugs at the tops of the shanksbeing jointly received in the single opening of the top part.

2. Ina bobbin clamp for shuttles, a guide member consisting of connectedtop and bottom parts, each having an aperture formed therein, a pair ofjaws having shanks the top and bottom edges of which are engaged withthe under and upper faces respectively of said top and bottom parts,

and a lug formed upen the top and bottom name to this specification inthe presence of edge of each shank, the adj facent lugs being tWosubscribing Witnesses. arranged With their inner aces in contactingrelation and jointly received in the re- ROBERT ALLEN 5 spectiveapertures of the top and bottom Witnesses:

parts. ALBION G. PEIRGE,

In testimony whereof I have signed my JOHN A. TUCKER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

7 Washington, D. G.

